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@ -7,7 +7,7 @@
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from test_framework.test_framework import ComparisonTestFramework
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from test_framework.util import *
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from test_framework.comptool import TestManager, TestInstance
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from test_framework.comptool import TestManager, TestInstance, RejectResult
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from test_framework.mininode import *
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from test_framework.blocktools import *
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import logging
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@ -15,7 +15,7 @@ import copy
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import time
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import numbers
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from test_framework.key import CECKey
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from test_framework.script import CScript, CScriptOp, SignatureHash, SIGHASH_ALL, OP_TRUE
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from test_framework.script import CScript, CScriptOp, SignatureHash, SIGHASH_ALL, OP_TRUE, OP_FALSE
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class PreviousSpendableOutput(object):
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def __init__(self, tx = CTransaction(), n = -1):
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@ -122,13 +122,29 @@ class FullBlockTest(ComparisonTestFramework):
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return TestInstance([[self.tip, True]])
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# returns a test case that asserts that the current tip was rejected
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def rejected():
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return TestInstance([[self.tip, False]])
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def rejected(reject = None):
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if reject is None:
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return TestInstance([[self.tip, False]])
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else:
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return TestInstance([[self.tip, reject]])
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# move the tip back to a previous block
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def tip(number):
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self.tip = self.blocks[number]
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# add transactions to a block produced by next_block
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def update_block(block_number, new_transactions):
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block = self.blocks[block_number]
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old_hash = block.sha256
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self.add_transactions_to_block(block, new_transactions)
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block.solve()
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# Update the internal state just like in next_block
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self.tip = block
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self.block_heights[block.sha256] = self.block_heights[old_hash]
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del self.block_heights[old_hash]
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self.blocks[block_number] = block
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return block
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# creates a new block and advances the tip to that block
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block = self.next_block
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@ -141,14 +157,15 @@ class FullBlockTest(ComparisonTestFramework):
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# Now we need that block to mature so we can spend the coinbase.
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test = TestInstance(sync_every_block=False)
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for i in range(100):
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for i in range(99):
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block(1000 + i)
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test.blocks_and_transactions.append([self.tip, True])
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save_spendable_output()
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yield test
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# Start by bulding a couple of blocks on top (which output is spent is in parentheses):
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# Start by building a couple of blocks on top (which output is spent is
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# in parentheses):
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# genesis -> b1 (0) -> b2 (1)
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out0 = get_spendable_output()
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block(1, spend=out0)
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@ -156,8 +173,7 @@ class FullBlockTest(ComparisonTestFramework):
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yield accepted()
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out1 = get_spendable_output()
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block(2, spend=out1)
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# Inv again, then deliver twice (shouldn't break anything).
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b2 = block(2, spend=out1)
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yield accepted()
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@ -168,8 +184,8 @@ class FullBlockTest(ComparisonTestFramework):
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#
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# Nothing should happen at this point. We saw b2 first so it takes priority.
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tip(1)
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block(3, spend=out1)
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# Deliver twice (should still not break anything)
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b3 = block(3, spend=out1)
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txout_b3 = PreviousSpendableOutput(b3.vtx[1], 1)
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yield rejected()
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@ -214,7 +230,7 @@ class FullBlockTest(ComparisonTestFramework):
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# \-> b3 (1) -> b4 (2)
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tip(6)
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block(9, spend=out4, additional_coinbase_value=1)
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yield rejected()
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yield rejected(RejectResult(16, 'bad-cb-amount'))
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# Create a fork that ends in a block with too much fee (the one that causes the reorg)
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@ -226,7 +242,7 @@ class FullBlockTest(ComparisonTestFramework):
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yield rejected()
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block(11, spend=out4, additional_coinbase_value=1)
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yield rejected()
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yield rejected(RejectResult(16, 'bad-cb-amount'))
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# Try again, but with a valid fork first
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@ -252,6 +268,10 @@ class FullBlockTest(ComparisonTestFramework):
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yield TestInstance([[b12, True, b13.sha256]]) # New tip should be b13.
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# Add a block with MAX_BLOCK_SIGOPS and one with one more sigop
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b16 (6)
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# \-> b3 (1) -> b4 (2)
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# Test that a block with a lot of checksigs is okay
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lots_of_checksigs = CScript([OP_CHECKSIG] * (1000000 / 50 - 1))
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@ -264,8 +284,121 @@ class FullBlockTest(ComparisonTestFramework):
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out6 = get_spendable_output()
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too_many_checksigs = CScript([OP_CHECKSIG] * (1000000 / 50))
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block(16, spend=out6, script=too_many_checksigs)
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yield rejected(RejectResult(16, 'bad-blk-sigops'))
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# Attempt to spend a transaction created on a different fork
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b17 (b3.vtx[1])
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# \-> b3 (1) -> b4 (2)
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tip(15)
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block(17, spend=txout_b3)
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yield rejected(RejectResult(16, 'bad-txns-inputs-missingorspent'))
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# Attempt to spend a transaction created on a different fork (on a fork this time)
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5)
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# \-> b18 (b3.vtx[1]) -> b19 (6)
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# \-> b3 (1) -> b4 (2)
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tip(13)
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block(18, spend=txout_b3)
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yield rejected()
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block(19, spend=out6)
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yield rejected()
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# Attempt to spend a coinbase at depth too low
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b20 (7)
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# \-> b3 (1) -> b4 (2)
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tip(15)
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out7 = get_spendable_output()
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block(20, spend=out7)
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yield rejected(RejectResult(16, 'bad-txns-premature-spend-of-coinbase'))
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# Attempt to spend a coinbase at depth too low (on a fork this time)
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5)
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# \-> b21 (6) -> b22 (5)
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# \-> b3 (1) -> b4 (2)
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tip(13)
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block(21, spend=out6)
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yield rejected()
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block(22, spend=out5)
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yield rejected()
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# Create a block on either side of MAX_BLOCK_SIZE and make sure its accepted/rejected
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6)
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# \-> b24 (6) -> b25 (7)
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# \-> b3 (1) -> b4 (2)
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tip(15)
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b23 = block(23, spend=out6)
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old_hash = b23.sha256
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tx = CTransaction()
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script_length = MAX_BLOCK_SIZE - len(b23.serialize()) - 69
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script_output = CScript([chr(0)*script_length])
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tx.vout.append(CTxOut(0, script_output))
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tx.vin.append(CTxIn(COutPoint(b23.vtx[1].sha256, 1)))
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b23 = update_block(23, [tx])
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# Make sure the math above worked out to produce a max-sized block
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assert_equal(len(b23.serialize()), MAX_BLOCK_SIZE)
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yield accepted()
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# Make the next block one byte bigger and check that it fails
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tip(15)
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b24 = block(24, spend=out6)
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script_length = MAX_BLOCK_SIZE - len(b24.serialize()) - 69
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script_output = CScript([chr(0)*(script_length+1)])
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tx.vout = [CTxOut(0, script_output)]
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b24 = update_block(24, [tx])
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assert_equal(len(b24.serialize()), MAX_BLOCK_SIZE+1)
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yield rejected(RejectResult(16, 'bad-blk-length'))
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b25 = block(25, spend=out7)
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yield rejected()
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# Create blocks with a coinbase input script size out of range
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7)
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# \-> ... (6) -> ... (7)
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# \-> b3 (1) -> b4 (2)
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tip(15)
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b26 = block(26, spend=out6)
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b26.vtx[0].vin[0].scriptSig = chr(0)
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b26.vtx[0].rehash()
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# update_block causes the merkle root to get updated, even with no new
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# transactions, and updates the required state.
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b26 = update_block(26, [])
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yield rejected(RejectResult(16, 'bad-cb-length'))
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# Extend the b26 chain to make sure bitcoind isn't accepting b26
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b27 = block(27, spend=out7)
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yield rejected()
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# Now try a too-large-coinbase script
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tip(15)
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b28 = block(28, spend=out6)
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b28.vtx[0].vin[0].scriptSig = chr(0)*101
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b28.vtx[0].rehash()
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b28 = update_block(28, [])
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yield rejected(RejectResult(16, 'bad-cb-length'))
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# Extend the b28 chain to make sure bitcoind isn't accepted b28
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b29 = block(29, spend=out7)
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# TODO: Should get a reject message back with "bad-prevblk", except
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# there's a bug that prevents this from being detected. Just note
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# failure for now, and add the reject result later.
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yield rejected()
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# b30 has a max-sized coinbase scriptSig.
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tip(23)
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b30 = block(30)
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b30.vtx[0].vin[0].scriptSig = chr(0)*100
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b30.vtx[0].rehash()
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b30 = update_block(30, [])
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yield accepted()
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if __name__ == '__main__':
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